51010105007 has 4 divisors (see below), whose sum is σ = 51120756456. Its totient is φ = 50899453560.

The previous prime is 51010104997. The next prime is 51010105039. The reversal of 51010105007 is 70050101015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70050101015 = 5 ⋅14010020203.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51010105007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51010105007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51010105207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55325033 + ... + 55325954.

It is an arithmetic number, because the mean of its divisors is an integer number (12780189114).

Almost surely, 2^51010105007 is an apocalyptic number.

51010105007 is a deficient number, since it is larger than the sum of its proper divisors (110651449).

51010105007 is a wasteful number, since it uses less digits than its factorization.

51010105007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110651448.

The product of its (nonzero) digits is 175, while the sum is 20.

The spelling of 51010105007 in words is "fifty-one billion, ten million, one hundred five thousand, seven".